<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        //get 和 set
        class Phone{
            //动态
            get price(){
                console.log('价格属性被读取了');
                return 'i hell'
            }
            //判断
            set price(neewVal){
                console.log('价格属性被修改了');
            }
        }

        let s = new  Phone();
        s.price = 'free'
    </script>
</body>
</html>